How do I connect to mongodb over SSL? How do I copy an SSL certificate onto a databricks cluster?

I am trying load data stored on Mongodb over SSL, using the brand new mongo-spark connector. As I understand it from the folks at Mongo, I should be able to do this in a similar fashion to their regular python driver, by specifying a path to my certificate in the uri (i.e. mongodb://username:password @ URL:port/database?ssl=true&ssl_ca_certs=/path/to/local/cert.pem)

However, I am having trouble copying the cert to the local filesystem of each of the cluster computers. My instinct is that this can be done with an init script but a copy to local from s3 during init seems to be tricky. Is this the right approach?